1.1.12 Wasted Energy

Cards (9)

  • In practice, most systems tend to be open systems.
  • When energy transfers occur that are not useful, these are described as energy being dissipated to the surroundings.
  • Dissipated just means spread out.
  • Often these less useful energy transfers involve heating, light and sound.
  • When energy is transferred to the thermal stores of the objects, the temperature of the objects increases.
  • Visible light is electromagnetic radiation.
  • When sound is produced, the sound waves make the air particles vibrate as the wave carries energy away.
  • Useful energy can be defined as: The energy that is transferred from store to store and used for an intended purpose.
  • Wasted energy can be defined as: The energy that is not useful for the intended purpose and is dissipated to the surroundings.